Collapsible spiral reinforcement for concrete columns.



A. BINDLEY L Ci J. MGN. GLLAPSIBLE SPIRAL REINPORCEMENT .FR CONCRETE CDLUMNS. APPIIOATION FILED NOV.14, 1912-' Mmm @TAT PATEK Ohldil@ ALBION BINDLEY AND CHRISTOPHER JfIVIOGfl-LN, F CHARLEROI, PENNSYLVANIA,

ASSltrilOBS T0 PTTSBURGH STEEL PRODUCTS CCMPANY, OF' i" SYLVMLTA, A CORPORATION OF PENNSYLVANA.

PITTSBURGH. PENN- COLLAFSBLE SPIR-AL REXNFORCEMENT FOR CONCRETE COLUMNS.

.esiti-ienne.

"` sppiieanon sied november T0 lll whom t may con-cern n 'nBeit known that we, ALBION BINDLEY and 4Cifiliis'rornun J; liloean, citizens of the United States, and` residents of Charleroi,.in 5 the county of Washington and State of Pennsylvania, have invented certain new `and useful Improvements in Collapsible Spiral Reinforcements for Concrete Columns, of which the following lis a specilication. Y V

Our invention relates to.a metallic reinlforcement for concrete structures and parl"ticularly relates to such reinforcement for use in concrete columns.

The main vobject of the invention is to provide` a construction which'can be cheaply .and simply built and which shall als be "capable of being collapsed for convenience and'cheapness of storage or transportation. e are aware thatit has heretofore been proposed'to construct a reinforcement for a3, concrete columns from a series of longitudinalor. upright members and a surrounding or encircling member or members disposed and placed upon the upright members and tied -or f connected thereto, the encircling .,members being composed of' separate, inde- 'i pendent bands or the turns or elements of a continuous spiral. Various means have been employed for tying or connecting the encircling 'member to the upright o-r longitudinal members of the reinforcement and various i i constructions of longitudinal member have been employed to facilitate the connection and spacing of the encircling member. We

are also aware that it has heretofore been proposed to secure the encircling member or spiral coil to 40 bers,

over the coils of the encircling member.

arealso aware that it has been proposed to provide hooks projecting from the longitudinal members for securing the encircling i members 'thereto Specification of Letters Patent.

the longitudinal members by l' notching the edges of the longitudinal mein- 1 seating the turns of the encircling member or members thereinv and closing ,l over the free end; of the metal at the notch. to. hold the encircling member therein in such manner that it will be free to turn.l

45 This method weakens the longitudinal members by punching the notches therein and` also adds to the cost of construction by the added operation of forcing the free epds e 'Patented Novf3, 191.4.

ie, i912. s'riai no. 731,249.

the added operation of turning over the ends ofthe hooks to secure the encircling member after being seated in the hooks.

The special object of this invention is to simplify the structure,cheapen its cost and particularly to avoid the cutting or slotting of the longitudinal or upright members as welt as the added operation of turning or forcing over the ends of the notches or hooks. in the manner heretofore proposed, while at the same timeaffording a proper spacing of the encircling member upon the upright or longitudinal members so as to permit it to 1 turn at the point of connection to collapse the structure.

Heretofore when column lreinforcements of this nature have been set up din extended position preparatory to being embedded in the concrete, they have been somewhat wabbly or shaky owing to the pivotal or swiveling connection between thezparts.

It is also the object of this invention t0 avoid this objectionablefeature providing means to make the collapsible structure rigid when set up in extended "or operative position.

Our invention consists in the construction of metallic reinforcement for concrete columns hereafter more particularly described and then specified in the claims. K

In the accompanying drawings, Figure l .is a longitudinal section through a concrete column showing a metallic reinforcement therefor constructed in accordance with this invention, the upper vportion of the column being broken away. Fig. 2 is a horizontal section on .the line 2, 2 of Fig. 1. Fig. 3 is a front elevation of the metallic reinforcement in collapsed position, according to one method ofcollapsing the same. Fig. 4 is an edge view of the reinforcement when in the position shown in Fig. 3. Fig. y5 is a similar view showing another method of collapsing the structure. Fig. 6 is a plan view of the spacing ring detached from the structure. Fig. 7 is a perspectiveview of a portion of one of the upright Yor longitudinal members with a portion of the en. circling member connected thereto in accordance with this invention.

l indicates the upright or longitudinal members the reinforcement. The numbut this also necessitates' pend upon the sizey of lthe column and the rolled bars or rods rolled, by preference,

with longitudinal ribs or ridges 4 at or near eachedge thereof. (See Fig. 7.) These ribs or ridges may be formed in the rolling operation or they may be formed in any other desired or suitable manner. The ridges 4 form Welding projections by which staples or eyes 5 are Welded to the longitudinal members 1 and may be continuous or interrupted; The object of the ridges is to facilitate the Welding of the staples or eyes 5 by-means of the Well known electric Welding process and it Will be understood that other forms. of projections as Well as other means for 'providing them might be employed to assist in readily vWelding the eyes to the members 1.

The members 5 for connecting the encircling member 3 to the uprights 1 are preferably U-shaped Wire staples and they are Welded to the ridges of the members 1 at the desired points throughout length of the members so that they project laterally therefrom and form eyes thrngh Which the encircling A'Ember may be threaded. rThe welding of une staples or eyes to the members 1 is effected in any proper electric Welding machine as Will be readily understood by those skilled in the art and in the form shown the staples are secured at four separated points of Weld, thus making a very strong joint. The eyes 5 of each member 1 may be spaced apart as desired, there may be one provided on each member for each coil or turn of the encircling member or adjacent upright members may take successive or alternate coils of the encircling` member. The preparation of the upright members 1 at the desired points for the electric Welding thereto of the eyes 5 in the proper'spaced relation lmay be of any desired kind, as understood in the art, and it Will therefore be understood that it would be Within our invention to electrically Weld the eyes 5 upon the members 1 in proper spaced relation by any expedient or by any desired weldingjmeans or operation. Preferably after the Welding operation the coils or vturns of the encircling member 3 are threaded through the eyes5 so they become connected to the members 1.. The connectionbetween the coils 3 and the eyes 5 is such that the members 1 are free to be slid l around the coil toward each other as shown in Fig 3 and so that the coils are free to swivel or rotate in the-eyes to collapse the column as shown in Fig. 11. To collapse the reinforcement, all of the members may be slid into sidewise p1 oximity at one' side of the coil as shown in Figs. 3 and 4: or some of them may be moved-to one side and some to the side diame'trically opposite as shown in Fig. 5and asy will be readily understood in the art.

The eyes 5 are preferably formed of pieces of round Wirebent into U shape, but it Will be understood that the inventionvis not limited to this specific form of eye member.

When the reinforcement is expanded into the position for embedding in the concrete, a spacing member 6 is preferably provided at each end of the structure to properly space the longitudinal members 1 from each other and to hold the structure rigid.- The spacing member consists of a continuous band preferably of the same conformation as the coils of the reinforcement,` the case illustrated being a ring, and is provided in the proper spaced relation With a plurality of clips forming eyes 7 Welded to the ring `6. The eyes 7 slip over the ends of the longitudinal members 1 and hold them rigidly in position.

While the invention is particularly useful for reinforcement for concrete columns, pilj lars, posts or other upright structures, composed of concrete and having the reinforcement embedded therein, we do not limit ourselves to this particulargeneral form of reinforcement, the invention' being applicable to other forms comprising essentially a series of longitudinal members and an encircling or surrounding member or members maintained in spaced relation thereon and rotatably mounted in the eyes of one or more of the upright members. It will also be understood that the invention is not limited to locating the encircling member 3 on the outside of the longitudinal members as the same might, if desired, be disposed on the inside of these members in which case the eyes 5 would project laterally toward the center of the structure.

By this Lnvention the necessity of Weakening the upright members or causing Waste of material by punching out notches to provide seats for the encircling member as Well as the necessity of forcing over the ends of hooks or other fasteners to hold the encircling member to the uprights is avoided.

That We claimv as our invention is ge- 1. In a metallic reinforcement for concrete, a series of longitudinal members provided with Welding projections, individual and independent eye members Welded at one end to said longitudinal members by said las priefeee l111g its turns threacled through seid. eyes whereby the turns ere edeps'ecl to rotate comprising a plurality of longitudinal bars,

U-shaped members having their ends welded at four points to seid bars on the same side thereof and forming eyes et one side of seid bars and a spiral coil, the turns of which `are located n said. eyes and free to rotate therein to collapse the strncture.

' 3. In a collapsible reinforcement for concrete columns, e plurality of longitunel bars, an encircling spiral rotetvely. connect# ed to Said beretoperm che strucure Le be collapsed and a spacing ring having clips Welded thereto, seid clips engaging the lon gitudnal bars when the strneisnre is in extended position to 'rgi-:lyl couple the members together.

Signed et Monessen in the county of Westmoreland and Smte of Pennsylvanie this ith day of November A. D. i212.

ALBION BINDLEY. o CHRSTOPHER JT.. MGN. Ntness'esz EDWARD H. Emmer. W, W. MCNEHL. 

